Do you want to compare Uncle Sam with Sgt. Rock? Discover the powers, weakness & weapons of Uncle Sam and Sgt. Rock from Uncle Sam Biography and Sgt. Rock Biography. Find out all about Uncle Sam and Sgt. Rock.# Check out how is Uncle Sam unique and distinct from Sgt. Rock. Discover their love interest, sidekicks, family tree and the movies and games list in which Uncle Sam and Sgt. Rock have appeared. Find out everything about them here!